Good understanding of TCP / IP protocol stack and practical knowledge of VLAN / L3 VPNs
Very good knowledge on SIP / SDP protocol / RTP / SRTP / TLS protocols
Must have knowledge in OpenSIPS or Kamailio
Must have experience with C / C++ programming language
Must have knowledge in diameter
Experience in MySQL, MongoDB
Knowledge of IMS call flow
Standard features of Enterprise Communication Servers (PBXs)
Problem Troubleshooting and debugging techniques
Review work of resources
Good in Written and verbal communication
Nice to Have
Inter-process communication, API design, message queues
Experience in Freeswitch, Asterisk
Experience in building any of softPBX, Voicemail, ACD, IVRS these applications
Experience in any of the programming languages like Python, PHP, Javascript, Java
Knowledge of Linux / server administration
Experience in Linux and Linux commands line tools
Firewall, Security
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Senior Developer • Nagpur, India
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